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Finding the Fourth Proportional to 158,855.88, 219,212.58 and 87,245.64

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Solution

The fourth proportional to 158,855.88, 219,212.58 and 87,245.64 is: 120,394.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,855.88 : 219,212.58 = 87,245.64 : x
  2. Step 2: Convert to fraction form
    158,855.88/219,212.58 = 87,245.64/x
  3. Step 3: Cross multiply
    158,855.88x = 219,212.58 × 87,245.64
  4. Step 4: Simplify right side
    158,855.88x = 19,125,341,838.15
  5. Step 5: Solve for x
    x = 19,125,341,838.15/158,855.88
  6. Step 6: Final answer
    x = 120,394.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.